Rob Gronkowski has been asked to star in a porn movie (Picture: Getty)

A leading NFL player has been offered £2.4million to star in a porn movie.

The invitation surfaced after eccentric New England Patriots icon Rob Gronkowski was pictured semi-naked with his friend and adult film actress BiBi Jones, who was wearing one of his replica shirts.

She has just come out of retirement to relaunch her career and a sex outlet wants to team the pair in a blue movie.

Gronkowski signed a £34m contact extension last year and is expected to make £2.4m next season.

The 6ft 6in, 23-year-old has transformed the tight end position in his sport, scoring ten touchdowns in his rookie season, 17 last year and 11 this time around – including two as the Patriots beat the St Louis Rams 45-7 at Wembley in October.

Rob Gronkowski is likely to remain with the New England Patriots even if he accepts the offer (Picture: Getty)

To put the sex film offer in perspective, porn star Ron Jeremy banked a reported total of £3.4m making more than 2,000 blue movies in his career.

Gronkowski, loved throughout the United States, has yet to publicly accept or decline the invitation.

His season finished early after he broke his left arm a second time in a matter of months and he has been criticised for partying in Las Vegas during Super Bowl week, wrestling topless on a stage and slam dunking opponents while wearing nothing but a cast to protect his injury.

He is so popular that should he decide to be filmed with BiBi, respected sources believe the Patriots will still keep him on their roster, although he could be suspended for four games for breaking the NFL’s personal conduct policy.

If he does make the movie, suggested titles doing the rounds include: Gronk Goes Deep, Gronk If You’re Horny, Illegal Motion in the Backfield, Intentional Pounding and Patriot Games.